Revert to sending both stdout and stderr to the OPTIONSFILE for now
as this change was not backwards compatible. A more robust solution
checking the installed version and auto updating is needed.
Pointyhat to: bdrewery
With hat: portmgr

- Remove prompt for dialog4ports. Dialog4Ports is a
required part of ports 'make config' now. This is seen
as not much different than any other dependency.
- Allow dialog4ports to work with INSTALL_AS_USER
by building and using the port's WRKDIR version
through a Tools/scripts wrapper
- Add NO_DIALOG for 'config' as well.
- Fix D4P environment variables not passing to dialog4ports:
D4PHEIGHT, D4PWIDTH, D4PFULLSCREEN
Reviewed by: miwi, bapt, rum1cro@yandex.ru
Tested by: miwi, bapt, rum1cro@yandex.ru
Tested by: bdrewery (small exp-run)
Requested by: many